"Joining the Linux Foundation is one of many ways Valve is investing in the advancement of Linux gaming," Mike Sartain, a key member of the Linux team at Valve said. "Through these efforts we hope to contribute tools for developers building new experiences on Linux, compel hardware manufacturers to prioritize support for Linux, and ultimately deliver an elegant and open platform for Linux users."

Mark my words: Valve will do for Linux gaming what Android did for Linux mobile. Much crow will be eaten by naysayers in a few years.

I actually think the initial reception of the SteamOS/Steam Machine platform will be very poor.

Valve has always followed the slow-and-steady approach, but they always have a well-defined vision and the patience to stand behind their vision until it comes to fruition. Steam was originally considered a failure, a step-back, but after a couple years people began to warm up to it as Valve slowly-but-surely continued to improve it. I expect something similar to happen with the SteamOS/Steam Machines.